From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
Cc: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: [PATCH 0/8] KVM updates for 2.6.20-rc2
Date: Thu, 28 Dec 2006 17:09:17 +0200 [thread overview]
Message-ID: <4593DE1D.8010701@qumranet.com> (raw)
In-Reply-To: <20061228150104.GB16057-X9Un+BFzKDI@public.gmane.org>
Ingo Molnar wrote:
> * Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> wrote:
>
>
>>> Is there no cheap way to do this flushing preemptively (say in
>>> vcpu_put()), to make the VM context potentially loadable into another
>>> CPU?
>>>
>> You could issue a vmclear, but that forces a vm entry on the _same_
>> cpu to use vmlaunch instead of vmresume, which is documented as
>> expensive.
>>
>
> hm. Could you try to just do a vmresume nevertheless - maybe it works
> but is undocumented?
I'd hate to do that. There are at least three implementations of VT
(PD, Core, Core2) and maybe more when steppings and microcode updates
are considered. Not to mention having kvm fail when a new cpu is
introduced is not a pleasant scenario.
--
error compiling committee.c: too many arguments to function
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next prev parent reply other threads:[~2006-12-28 15:09 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-28 10:07 [PATCH 0/8] KVM updates for 2.6.20-rc2 Avi Kivity
2006-12-28 10:08 ` [PATCH 1/8] KVM: Use boot_cpu_data instead of current_cpu_data Avi Kivity
2006-12-28 10:09 ` [PATCH 2/8] KVM: Simplify is_long_mode() Avi Kivity
2006-12-28 10:12 ` [PATCH 5/8] KVM: Move common msr handling to arch independent code Avi Kivity
2006-12-28 10:13 ` [PATCH 6/8] KVM: More msr misery Avi Kivity
[not found] ` <45939755.7010603-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 10:10 ` [PATCH 3/8] KVM: Initialize kvm_arch_ops on unload Avi Kivity
2006-12-28 10:11 ` [PATCH 4/8] KVM: Implement a few system configuration msrs Avi Kivity
[not found] ` <20061228101117.65A392500F7-LjA0eNSCdXrQnzwC+xcbyw@public.gmane.org>
2007-01-01 0:07 ` Ingo Oeser
[not found] ` <200701010107.18008.ioe-lkml-MFZNYGWX9eyELgA04lAiVw@public.gmane.org>
2007-01-01 8:20 ` Avi Kivity
2006-12-28 10:14 ` [PATCH 7/8] KVM: Rename some msrs Avi Kivity
2006-12-28 10:15 ` [PATCH 8/8] KVM: Fix oops on oom Avi Kivity
2006-12-28 10:33 ` [PATCH 0/8] KVM updates for 2.6.20-rc2 Ingo Molnar
[not found] ` <20061228103345.GA4708-X9Un+BFzKDI@public.gmane.org>
2006-12-28 11:04 ` Avi Kivity
[not found] ` <4593A4B7.2070404-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 11:23 ` Ingo Molnar
[not found] ` <20061228112356.GA14386-X9Un+BFzKDI@public.gmane.org>
2006-12-28 12:21 ` Avi Kivity
2006-12-28 13:15 ` Ingo Molnar
2006-12-28 11:30 ` Ingo Molnar
[not found] ` <20061228113038.GA16190-X9Un+BFzKDI@public.gmane.org>
2006-12-28 12:32 ` Avi Kivity
[not found] ` <4593B948.5090009-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 13:37 ` Ingo Molnar
[not found] ` <20061228133746.GC3392-X9Un+BFzKDI@public.gmane.org>
2006-12-28 13:49 ` Avi Kivity
[not found] ` <4593CB61.5050709-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 13:50 ` Ingo Molnar
[not found] ` <20061228135020.GA7606-X9Un+BFzKDI@public.gmane.org>
2006-12-28 13:58 ` Avi Kivity
[not found] ` <4593CD74.6060202-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 14:07 ` Ingo Molnar
[not found] ` <20061228140742.GA10033-X9Un+BFzKDI@public.gmane.org>
2006-12-28 14:18 ` Avi Kivity
[not found] ` <4593D243.1030301-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 15:01 ` Ingo Molnar
[not found] ` <20061228150104.GB16057-X9Un+BFzKDI@public.gmane.org>
2006-12-28 15:09 ` Avi Kivity [this message]
[not found] ` <4593DE1D.8010701-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 15:11 ` Ingo Molnar
[not found] ` <20061228151159.GA20279-X9Un+BFzKDI@public.gmane.org>
2006-12-28 15:25 ` Avi Kivity
[not found] ` <4593E1E3.2020800-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2006-12-28 15:28 ` Avi Kivity
2006-12-28 12:42 ` [patch] kvm: fix GFP_KERNEL allocation in atomic section in kvm_dev_ioctl_create_vcpu() Ingo Molnar
2006-12-28 12:56 ` Avi Kivity
2006-12-28 12:55 ` Ingo Molnar
[not found] ` <20061228125544.GA31207-X9Un+BFzKDI@public.gmane.org>
2006-12-28 13:08 ` [patch, try#2] " Ingo Molnar
2006-12-28 13:14 ` Avi Kivity
2006-12-28 13:23 ` Ingo Molnar
2006-12-28 13:30 ` Avi Kivity
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